﻿using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Xml;
using System.Drawing;
using System.Drawing.Imaging;
using System.Drawing.Drawing2D;
using System.Web;
using System.Web.Hosting;
using System.Text;
using System.IO.Packaging;
using System.Net.Mime;
using ICSharpCode.SharpZipLib;
using ICSharpCode.SharpZipLib.Zip;

namespace Tools
{
    /// <summary>
    /// TODO：图像预览
    /// TODO;部分实现，未考虑线程安全
    /// </summary>
    public class FileHelper
    {

        /// <summary>
        /// 写入文件
        /// </summary>
        /// <param name="inputStream">要写入的文件流</param>
        /// <param name="abFilePath">绝对路径</param>
        /// <param name="fileMode"></param>
        public static void SaveFile(Stream inputStream, string abFilePath, FileMode fileMode)
        {
            using (var stream = new FileStream(abFilePath, fileMode))
            {
                inputStream.CopyTo(stream);
            }
        }

        public static void GetFile()
        {

        }


        #region Txt

        public class Text
        {
            /// <summary>
            ///     写入或追加本地TXT文本内容
            /// </summary>
            /// <param name="file">文件</param>
            /// <param name="context">内容</param>
            public static void WriteLocalTxt(string file, string context)
            {
                System.IO.File.AppendAllText(file, context);
            }


            /// <summary>
            /// 读文本文件
            /// </summary>
            /// <param name="filename">文件路径</param>
            /// <returns></returns>
            public static string ReadTxt(String filename)
            {
                //if(!File.Exists(filename))
                //{
                //    return string.Empty;
                //}
                using (FileStream fs = new FileStream(filename, FileMode.Open, FileAccess.Read))
                {
                    if (fs.Length < 0)
                    {
                        return string.Empty;
                    }
                    StreamReader sr = new StreamReader(fs, Encoding.GetEncoding("UTF-8"));
                    return sr.ReadToEnd();
                }
            }

            /// <summary>
            /// 写文本文件
            /// </summary>
            /// <param name="filename">文件路径</param>
            /// <returns></returns>
            public static void WriteTxt(String filename, String content)
            {
                using (FileStream fs = new FileStream(filename, FileMode.Create, FileAccess.Write))
                {
                    StreamWriter sw = new StreamWriter(fs);
                    sw.Write(content);
                    sw.Flush();
                    //关闭流
                    sw.Close();
                    fs.Close();
                }
            }
        }



        #endregion

        #region XML

        public class Xml
        {
            /// <summary>
            ///     迭代
            /// </summary>
            /// <param name="file"></param>
            /// <param name="data"></param>
            public static void Save(String file, IList<XmlData> data)
            {
                var xml = new XmlDocument();
                xml.AppendChild(xml.CreateXmlDeclaration("1.0", "UTF-8", null));
                var root = xml.CreateElement("xml");
                xml.AppendChild(root);
                //xml.Load(file);


                foreach (var xmlData in data)
                {
                    var node = xml.CreateElement(xmlData.Name);
                    foreach (var att in xmlData.Attributes)
                    {
                        node.SetAttribute(att.Key, att.Value);
                    }
                    if (xmlData.ChildNode != null)
                    {
                        foreach (var cnode in xmlData.ChildNode)
                        {
                            XmlElement childNode = xml.CreateElement(cnode.Name);
                            childNode.InnerText = cnode.Value;
                            foreach (var att in cnode.Attributes)
                            {
                                childNode.SetAttribute(att.Key, att.Value);
                            }
                            node.AppendChild(childNode);
                        }
                    }
                    root.AppendChild(node);
                }

                xml.Save(file);

                //XmlNode root=xml.SelectSingleNode("bookstore");//查找 

                //root.AppendChild(xe1);//添加到节点中 

            }

            public static IList<XmlData> LoadXml(string file)
            {
                XmlDocument xml = new XmlDocument();
                xml.Load(file);
                return new List<XmlData>();
            }

            /// <summary>
            ///     获取单节点内容
            /// </summary>
            /// <param name="url">指定的文件</param>
            /// <param name="nodeName">节点名称</param>
            /// <returns>节点内容</returns>
            public static string SelectSingleNode(string url, string nodeName)
            {

                var reader = new XmlTextReader(url);
                var xmlDoc = new XmlDocument();
                xmlDoc.Load(reader);

                var selectSingleNode = xmlDoc.SelectSingleNode(nodeName);
                if (selectSingleNode == null)
                    throw new NullReferenceException(nodeName);

                return selectSingleNode.InnerText;
            }
        }

        #region 保存上传的excel文件





        #endregion

        #endregion

        #region IMG

        public static string SaveFileRootPathName = "UpLoad";

        /// <summary>
        ///     保存HTTP上传的图片
        /// </summary>
        /// <param name="inputStream">图片流</param>
        /// <param name="suffixName">图片类型</param>
        /// <param name="savefileName">希望命名的文件名（不含后缀）</param>
        /// <param name="saveDirectoryName">保存文件夹名称</param>
        /// <returns></returns>
        public static string SaveImg(Stream inputStream, ImageSuffixNames suffixName, string savefileName,
            string saveDirectoryName)
        {
            if (inputStream == null)
                throw new ArgumentNullException("inputStream");

            //变更文件名
            string fileName = String.Format("{0}.{1}", savefileName, suffixName.ToString("G").ToLower());

            if (String.IsNullOrEmpty(fileName))
                throw new ArgumentException("fileName");

            string filePath = String.Format("{0}/{1}/{2}", HostingEnvironment.MapPath("~"), SaveFileRootPathName,
                saveDirectoryName);

            if (!File.Exists(filePath))
            {
                Directory.CreateDirectory(filePath);
            }

            string absolutePath = Path.Combine(filePath, Path.GetFileName(fileName));

            SaveFile(inputStream, absolutePath, FileMode.CreateNew);

            fileName = String.Format("/{0}/{1}/{2}", SaveFileRootPathName, saveDirectoryName, fileName);

            return fileName;
        }

        /// <summary>
        /// 根据指定的文件路径+文件名，读取文件返回Stream
        /// </summary>
        /// <param name="filePath">文件夹路径</param>
        /// <param name="imageName">文件夹下文件名</param>
        /// <returns>StreamOrNull</returns>
        public static Stream ReturnImageStream(string filePath, string imageName)
        {
            string url = String.Format(@"{0}/{1}", filePath, imageName);
            if (File.Exists(url))
            {
                //存在 
                return File.Open(url, FileMode.Open);

            }
            //不存在 
            return null;
        }

        /// <summary>
        /// 创建存储文件夹
        /// </summary>
        /// <param name="path">路径</param>
        public static void CreateFolder(string path)
        {
            if (!Directory.Exists(path))
            {
                Directory.CreateDirectory(path);
            }
        }




        /// <summary>
        /// 验证文件类型是否支持
        /// </summary>
        /// <param name="uploadFile">文件</param>
        /// <param name="types">文件类型（后缀）</param>
        /// <returns>true:不符合 false:符合</returns>
        public static bool CheckType(HttpPostedFileWrapper uploadFile, string[] types)
        {
            return !types.Any(m => uploadFile.FileName.EndsWith(m));
        }

        /// <summary>
        ///     验证尺寸
        /// </summary>
        /// <param name="uploadFile"></param>
        /// <param name="size">文件大小限制,单位mb</param>
        /// <returns>true:不符合 false:符合</returns>
        public static bool CheckSize(HttpPostedFileWrapper uploadFile, int size)
        {
            return uploadFile.ContentLength >= (size * 1024 * 1024);
        }


        #region Image Suffix Name
        public static readonly string ImgJpg = ".jpg";
        public static readonly string ImgPng = ".png";
        public static readonly string ImgGif = ".gif";
        public static readonly string ImgJpeg = ".jpeg";
        public static readonly string ImgBmp = ".bmp";

        public static readonly string[] ImgSuffixNames = { ImgJpg, ImgPng, ImgGif, ImgJpeg, ImgBmp };


        #endregion

        #region  图片处理

        /// <summary>
        /// 裁剪图片
        /// System.Drawing.Bitmap 是用于处理由像素数据定义的图像的对象
        ///  System.Drawing.Image为System.Drawing.Bitmap 和 System.Drawing.Imaging.Metafile 的类提供功能的抽象基类
        ///  Graphics 封装一个 GDI+ 绘图图面。此类不能被继承。
        /// </summary>
        /// <param name="imgSrc">源图片绝对路径</param>
        /// <param name="x">原点x轴</param>
        /// <param name="y">原点y轴</param>
        /// <param name="height">需要绘制的原图高度，根据y点向下增加像素点，单位像素</param>
        /// <param name="Quality">图片质量</param>
        /// <param name="SavePath">保存路径</param>
        /// <param name="t">System.Drawing.Bitmap 的宽度（以像素为单位）</param>
        /// <param name="u">System.Drawing.Bitmap 的高度（以像素为单位</param>
        public static void cutAvatar(string imgSrc, int x, int y, int width, int height, long Quality, string SavePath,
            int t, int u)
        {
            //根据路径创建 System.Drawing.Image
            System.Drawing.Image original = System.Drawing.Image.FromFile(imgSrc);
            //用指定的大小和格式初始化 System.Drawing.Bitmap 类的新实例
            Bitmap img = new Bitmap(t, u, PixelFormat.Format24bppRgb);
            //获取此 System.Drawing.Bitmap 中指定像素的颜色，使指定的颜色对此 System.Drawing.Bitmap 透明
            img.MakeTransparent(img.GetPixel(0, 0));
            //设置此 System.Drawing.Bitmap 的分辨率(水平分辨率,垂直分辨率)以每英寸的点数为单位。  
            img.SetResolution(72, 72);
            //从指定的 System.Drawing.Image 创建新的 System.Drawing.Graphics
            using (Graphics gr = Graphics.FromImage(img))
            {
                //TODO:可以将判断抽象
                //根据不同图片类型选择背景色
                if (original.RawFormat.Equals(ImageFormat.Jpeg) || original.RawFormat.Equals(ImageFormat.Png) ||
                    original.RawFormat.Equals(ImageFormat.Bmp))
                {
                    gr.Clear(Color.Transparent);
                }
                if (original.RawFormat.Equals(ImageFormat.Gif))
                {
                    gr.Clear(Color.White);
                }
                //图片属性设置
                gr.InterpolationMode = InterpolationMode.HighQualityBicubic;
                gr.SmoothingMode = SmoothingMode.AntiAlias;
                gr.CompositingQuality = CompositingQuality.HighQuality;
                gr.PixelOffsetMode = PixelOffsetMode.HighQuality;
                gr.TextRenderingHint = System.Drawing.Text.TextRenderingHint.ClearTypeGridFit;


                using (var attribute = new System.Drawing.Imaging.ImageAttributes())
                {
                    attribute.SetWrapMode(WrapMode.TileFlipXY);
                    gr.DrawImage(original, new Rectangle(0, 0, t, t), x, y, width, height, GraphicsUnit.Pixel, attribute);
                }
            }
            ImageCodecInfo myImageCodecInfo = GetEncoderInfo("image/jpeg");
            if (original.RawFormat.Equals(ImageFormat.Jpeg))
            {
                myImageCodecInfo = GetEncoderInfo("image/jpeg");
            }
            else if (original.RawFormat.Equals(ImageFormat.Png))
            {
                myImageCodecInfo = GetEncoderInfo("image/png");
            }
            else if (original.RawFormat.Equals(ImageFormat.Gif))
            {
                myImageCodecInfo = GetEncoderInfo("image/gif");
            }
            else if (original.RawFormat.Equals(ImageFormat.Bmp))
            {
                myImageCodecInfo = GetEncoderInfo("image/bmp");
            }

            System.Drawing.Imaging.Encoder myEncoder = System.Drawing.Imaging.Encoder.Quality;
            EncoderParameters myEncoderParameters = new EncoderParameters(1);
            EncoderParameter myEncoderParameter = new EncoderParameter(myEncoder, Quality);
            myEncoderParameters.Param[0] = myEncoderParameter;
            img.Save(SavePath, myImageCodecInfo, myEncoderParameters);
        }

        /// <summary>
        /// 等比例缩放的
        /// </summary>
        /// <param name="original"></param>
        /// <param name="desiredWidth">长</param>
        /// <param name="desiredHeight">宽</param>
        /// <returns>返回矩形的长和宽</returns>
        private static Size GetThumbnailSize(System.Drawing.Image original, int desiredWidth, int desiredHeight)
        {
            var widthScale = (double)desiredWidth / original.Width;
            var heightScale = (double)desiredHeight / original.Height;
            var scale = widthScale < heightScale ? widthScale : heightScale;
            return new Size
            {
                Width = (int)(scale * original.Width),
                Height = (int)(scale * original.Height)
            };
        }

        private static ImageCodecInfo GetEncoderInfo(String mimeType)
        {
            int j;
            ImageCodecInfo[] encoders;
            encoders = ImageCodecInfo.GetImageEncoders();
            for (j = 0; j < encoders.Length; ++j)
            {
                if (encoders[j].MimeType == mimeType)
                    return encoders[j];
            }
            return null;
        }

        #endregion

        #region 正方型裁剪并缩放

        /// <summary>
        /// 正方型裁剪
        /// 以图片中心为轴心，截取正方型，然后等比缩放
        /// 用于头像处理
        /// </summary>
        /// <remarks>吴剑 2012-08-08</remarks>
        /// <param name="fromFile">原图Stream对象</param>
        /// <param name="fileSaveUrl">缩略图存放地址</param>
        /// <param name="side">指定的边长（正方型）</param>
        /// <param name="quality">质量（范围0-100）</param>
        public static void CutForSquare(System.IO.Stream fromFile, string fileSaveUrl, int side, int quality)
        {
            //创建目录
            string dir = Path.GetDirectoryName(fileSaveUrl);
            if (!Directory.Exists(dir))
                Directory.CreateDirectory(dir);

            //原始图片（获取原始图片创建对象，并使用流中嵌入的颜色管理信息）
            System.Drawing.Image initImage = System.Drawing.Image.FromStream(fromFile, true);

            //原图宽高均小于模版，不作处理，直接保存
            if (initImage.Width <= side && initImage.Height <= side)
            {
                initImage.Save(fileSaveUrl, System.Drawing.Imaging.ImageFormat.Jpeg);
            }
            else
            {
                //原始图片的宽、高
                int initWidth = initImage.Width;
                int initHeight = initImage.Height;

                //非正方型先裁剪为正方型
                if (initWidth != initHeight)
                {
                    //截图对象
                    System.Drawing.Image pickedImage = null;
                    System.Drawing.Graphics pickedG = null;

                    //宽大于高的横图
                    if (initWidth > initHeight)
                    {
                        //对象实例化
                        pickedImage = new System.Drawing.Bitmap(initHeight, initHeight);
                        pickedG = System.Drawing.Graphics.FromImage(pickedImage);
                        //设置质量
                        pickedG.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
                        pickedG.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
                        //定位
                        Rectangle fromR = new Rectangle((initWidth - initHeight) / 2, 0, initHeight, initHeight);
                        Rectangle toR = new Rectangle(0, 0, initHeight, initHeight);
                        //画图
                        pickedG.DrawImage(initImage, toR, fromR, System.Drawing.GraphicsUnit.Pixel);
                        //重置宽
                        initWidth = initHeight;
                    }
                    //高大于宽的竖图
                    else
                    {
                        //对象实例化
                        pickedImage = new System.Drawing.Bitmap(initWidth, initWidth);
                        pickedG = System.Drawing.Graphics.FromImage(pickedImage);
                        //设置质量
                        pickedG.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
                        pickedG.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
                        //定位
                        Rectangle fromR = new Rectangle(0, (initHeight - initWidth) / 2, initWidth, initWidth);
                        Rectangle toR = new Rectangle(0, 0, initWidth, initWidth);
                        //画图
                        pickedG.DrawImage(initImage, toR, fromR, System.Drawing.GraphicsUnit.Pixel);
                        //重置高
                        initHeight = initWidth;
                    }

                    //将截图对象赋给原图
                    initImage = (System.Drawing.Image)pickedImage.Clone();
                    //释放截图资源
                    pickedG.Dispose();
                    pickedImage.Dispose();
                }

                //缩略图对象
                System.Drawing.Image resultImage = new System.Drawing.Bitmap(side, side);
                System.Drawing.Graphics resultG = System.Drawing.Graphics.FromImage(resultImage);
                //设置质量
                resultG.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
                resultG.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
                //用指定背景色清空画布
                resultG.Clear(Color.White);
                //绘制缩略图
                resultG.DrawImage(initImage, new System.Drawing.Rectangle(0, 0, side, side),
                    new System.Drawing.Rectangle(0, 0, initWidth, initHeight), System.Drawing.GraphicsUnit.Pixel);

                //关键质量控制
                //获取系统编码类型数组,包含了jpeg,bmp,png,gif,tiff
                ImageCodecInfo[] icis = ImageCodecInfo.GetImageEncoders();
                ImageCodecInfo ici = null;
                foreach (ImageCodecInfo i in icis)
                {
                    if (i.MimeType == "image/jpeg" || i.MimeType == "image/bmp" || i.MimeType == "image/png" ||
                        i.MimeType == "image/gif")
                    {
                        ici = i;
                    }
                }
                EncoderParameters ep = new EncoderParameters(1);
                ep.Param[0] = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, (long)quality);

                //保存缩略图
                resultImage.Save(fileSaveUrl, ici, ep);

                //释放关键质量控制所用资源
                ep.Dispose();

                //释放缩略图资源
                resultG.Dispose();
                resultImage.Dispose();

                //释放原始图片资源
                initImage.Dispose();
            }
        }

        #endregion

        #region 自定义裁剪并缩放

        /// <summary>
        /// 指定长宽裁剪
        /// 按模版比例最大范围的裁剪图片并缩放至模版尺寸
        /// </summary>
        /// <remarks>吴剑 2012-08-08</remarks>
        /// <param name="fromFile">原图Stream对象</param>
        /// <param name="fileSaveUrl">保存路径</param>
        /// <param name="maxWidth">最大宽(单位:px)</param>
        /// <param name="maxHeight">最大高(单位:px)</param>
        /// <param name="quality">质量（范围0-100）</param>
        public static void CutForCustom(System.IO.Stream fromFile, string fileSaveUrl, int maxWidth, int maxHeight,
            int quality)
        {
            //从文件获取原始图片，并使用流中嵌入的颜色管理信息
            System.Drawing.Image initImage = System.Drawing.Image.FromStream(fromFile, true);

            //原图宽高均小于模版，不作处理，直接保存
            if (initImage.Width <= maxWidth && initImage.Height <= maxHeight)
            {
                initImage.Save(fileSaveUrl, System.Drawing.Imaging.ImageFormat.Jpeg);
            }
            else
            {
                //模版的宽高比例
                double templateRate = (double)maxWidth / maxHeight;
                //原图片的宽高比例
                double initRate = (double)initImage.Width / initImage.Height;

                //原图与模版比例相等，直接缩放
                if (templateRate == initRate)
                {
                    //按模版大小生成最终图片
                    System.Drawing.Image templateImage = new System.Drawing.Bitmap(maxWidth, maxHeight);
                    System.Drawing.Graphics templateG = System.Drawing.Graphics.FromImage(templateImage);
                    templateG.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
                    templateG.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
                    templateG.Clear(Color.White);
                    templateG.DrawImage(initImage, new System.Drawing.Rectangle(0, 0, maxWidth, maxHeight),
                        new System.Drawing.Rectangle(0, 0, initImage.Width, initImage.Height),
                        System.Drawing.GraphicsUnit.Pixel);
                    templateImage.Save(fileSaveUrl, System.Drawing.Imaging.ImageFormat.Jpeg);
                }
                //原图与模版比例不等，裁剪后缩放
                else
                {
                    //裁剪对象
                    System.Drawing.Image pickedImage = null;
                    System.Drawing.Graphics pickedG = null;

                    //定位
                    Rectangle fromR = new Rectangle(0, 0, 0, 0); //原图裁剪定位
                    Rectangle toR = new Rectangle(0, 0, 0, 0); //目标定位

                    //宽为标准进行裁剪
                    if (templateRate > initRate)
                    {
                        //裁剪对象实例化
                        pickedImage = new System.Drawing.Bitmap(initImage.Width,
                            (int)System.Math.Floor(initImage.Width / templateRate));
                        pickedG = System.Drawing.Graphics.FromImage(pickedImage);

                        //裁剪源定位
                        fromR.X = 0;
                        fromR.Y = (int)System.Math.Floor((initImage.Height - initImage.Width / templateRate) / 2);
                        fromR.Width = initImage.Width;
                        fromR.Height = (int)System.Math.Floor(initImage.Width / templateRate);

                        //裁剪目标定位
                        toR.X = 0;
                        toR.Y = 0;
                        toR.Width = initImage.Width;
                        toR.Height = (int)System.Math.Floor(initImage.Width / templateRate);
                    }
                    //高为标准进行裁剪
                    else
                    {
                        pickedImage = new System.Drawing.Bitmap((int)System.Math.Floor(initImage.Height * templateRate),
                            initImage.Height);
                        pickedG = System.Drawing.Graphics.FromImage(pickedImage);

                        fromR.X = (int)System.Math.Floor((initImage.Width - initImage.Height * templateRate) / 2);
                        fromR.Y = 0;
                        fromR.Width = (int)System.Math.Floor(initImage.Height * templateRate);
                        fromR.Height = initImage.Height;

                        toR.X = 0;
                        toR.Y = 0;
                        toR.Width = (int)System.Math.Floor(initImage.Height * templateRate);
                        toR.Height = initImage.Height;
                    }

                    //设置质量
                    pickedG.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
                    pickedG.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;

                    //裁剪
                    pickedG.DrawImage(initImage, toR, fromR, System.Drawing.GraphicsUnit.Pixel);

                    //按模版大小生成最终图片
                    System.Drawing.Image templateImage = new System.Drawing.Bitmap(maxWidth, maxHeight);
                    System.Drawing.Graphics templateG = System.Drawing.Graphics.FromImage(templateImage);
                    templateG.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
                    templateG.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
                    templateG.Clear(Color.White);
                    templateG.DrawImage(pickedImage, new System.Drawing.Rectangle(0, 0, maxWidth, maxHeight),
                        new System.Drawing.Rectangle(0, 0, pickedImage.Width, pickedImage.Height),
                        System.Drawing.GraphicsUnit.Pixel);

                    //关键质量控制
                    //获取系统编码类型数组,包含了jpeg,bmp,png,gif,tiff
                    ImageCodecInfo[] icis = ImageCodecInfo.GetImageEncoders();
                    ImageCodecInfo ici = null;
                    foreach (ImageCodecInfo i in icis)
                    {
                        if (i.MimeType == "image/jpeg" || i.MimeType == "image/bmp" || i.MimeType == "image/png" ||
                            i.MimeType == "image/gif")
                        {
                            ici = i;
                        }
                    }
                    EncoderParameters ep = new EncoderParameters(1);
                    ep.Param[0] = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, (long)quality);

                    //保存缩略图
                    templateImage.Save(fileSaveUrl, ici, ep);
                    //templateImage.Save(fileSaveUrl, System.Drawing.Imaging.ImageFormat.Jpeg);

                    //释放资源
                    templateG.Dispose();
                    templateImage.Dispose();

                    pickedG.Dispose();
                    pickedImage.Dispose();
                }
            }

            //释放资源
            initImage.Dispose();
        }

        #endregion

        #region 等比缩放

        /// <summary>
        /// 图片等比缩放
        /// </summary>
        /// <remarks>吴剑 2012-08-08</remarks>
        /// <param name="fromFile">原图Stream对象</param>
        /// <param name="savePath">缩略图存放地址</param>
        /// <param name="targetWidth">指定的最大宽度</param>
        /// <param name="targetHeight">指定的最大高度</param>
        /// <param name="watermarkText">水印文字(为""表示不使用水印)</param>
        /// <param name="watermarkImage">水印图片路径(为""表示不使用水印)</param>
        public static void ZoomAuto(System.IO.Stream fromFile, string savePath, System.Double targetWidth,
            System.Double targetHeight, string watermarkText, string watermarkImage)
        {
            //创建目录
            string dir = Path.GetDirectoryName(savePath);
            if (!Directory.Exists(dir))
                Directory.CreateDirectory(dir);

            //原始图片（获取原始图片创建对象，并使用流中嵌入的颜色管理信息）
            System.Drawing.Image initImage = System.Drawing.Image.FromStream(fromFile, true);

            //原图宽高均小于模版，不作处理，直接保存
            if (initImage.Width <= targetWidth && initImage.Height <= targetHeight)
            {
                //文字水印
                if (watermarkText != "")
                {
                    using (Graphics gWater = Graphics.FromImage(initImage))
                    {
                        Font fontWater = new Font("黑体", 10);
                        Brush brushWater = new SolidBrush(Color.White);
                        gWater.DrawString(watermarkText, fontWater, brushWater, 10, 10);
                    }
                }

                //透明图片水印
                if (watermarkImage != "")
                {
                    if (File.Exists(watermarkImage))
                    {
                        //获取水印图片
                        using (System.Drawing.Image wrImage = System.Drawing.Image.FromFile(watermarkImage))
                        {
                            //水印绘制条件：原始图片宽高均大于或等于水印图片
                            if (initImage.Width >= wrImage.Width && initImage.Height >= wrImage.Height)
                            {
                                using (Graphics gWater = Graphics.FromImage(initImage))
                                {

                                    //透明属性
                                    ImageAttributes imgAttributes = new ImageAttributes();
                                    ColorMap colorMap = new ColorMap();
                                    colorMap.OldColor = Color.FromArgb(255, 0, 255, 0);
                                    colorMap.NewColor = Color.FromArgb(0, 0, 0, 0);
                                    ColorMap[] remapTable = { colorMap };
                                    imgAttributes.SetRemapTable(remapTable, ColorAdjustType.Bitmap);

                                    float[][] colorMatrixElements =
                                {
                                    new float[] {1.0f, 0.0f, 0.0f, 0.0f, 0.0f},
                                    new float[] {0.0f, 1.0f, 0.0f, 0.0f, 0.0f},
                                    new float[] {0.0f, 0.0f, 1.0f, 0.0f, 0.0f},
                                    new float[] {0.0f, 0.0f, 0.0f, 0.5f, 0.0f}, //透明度:0.5
                                    new float[] {0.0f, 0.0f, 0.0f, 0.0f, 1.0f}
                                };

                                    ColorMatrix wmColorMatrix = new ColorMatrix(colorMatrixElements);
                                    imgAttributes.SetColorMatrix(wmColorMatrix, ColorMatrixFlag.Default,
                                        ColorAdjustType.Bitmap);
                                    gWater.DrawImage(wrImage,
                                        new Rectangle(initImage.Width - wrImage.Width, initImage.Height - wrImage.Height,
                                            wrImage.Width, wrImage.Height), 0, 0, wrImage.Width, wrImage.Height,
                                        GraphicsUnit.Pixel, imgAttributes);

                                }
                            }

                        }
                    }
                }

                //保存
                initImage.Save(savePath, System.Drawing.Imaging.ImageFormat.Jpeg);
            }
            else
            {
                //缩略图宽、高计算
                double newWidth = initImage.Width;
                double newHeight = initImage.Height;

                //宽大于高或宽等于高（横图或正方）
                if (initImage.Width > initImage.Height || initImage.Width == initImage.Height)
                {
                    //如果宽大于模版
                    if (initImage.Width > targetWidth)
                    {
                        //宽按模版，高按比例缩放
                        newWidth = targetWidth;
                        newHeight = initImage.Height * (targetWidth / initImage.Width);
                    }
                }
                //高大于宽（竖图）
                else
                {
                    //如果高大于模版
                    if (initImage.Height > targetHeight)
                    {
                        //高按模版，宽按比例缩放
                        newHeight = targetHeight;
                        newWidth = initImage.Width * (targetHeight / initImage.Height);
                    }
                }

                //生成新图
                //新建一个bmp图片
                System.Drawing.Image newImage = new System.Drawing.Bitmap((int)newWidth, (int)newHeight);
                //新建一个画板
                System.Drawing.Graphics newG = System.Drawing.Graphics.FromImage(newImage);

                //设置质量
                newG.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
                newG.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;

                //置背景色
                newG.Clear(Color.White);
                //画图
                newG.DrawImage(initImage, new System.Drawing.Rectangle(0, 0, newImage.Width, newImage.Height),
                    new System.Drawing.Rectangle(0, 0, initImage.Width, initImage.Height),
                    System.Drawing.GraphicsUnit.Pixel);

                //文字水印
                if (watermarkText != "")
                {
                    using (System.Drawing.Graphics gWater = System.Drawing.Graphics.FromImage(newImage))
                    {
                        System.Drawing.Font fontWater = new Font("宋体", 10);
                        System.Drawing.Brush brushWater = new SolidBrush(Color.White);
                        gWater.DrawString(watermarkText, fontWater, brushWater, 10, 10);

                    }
                }

                //透明图片水印
                if (watermarkImage != "")
                {
                    if (File.Exists(watermarkImage))
                    {
                        //获取水印图片
                        using (System.Drawing.Image wrImage = System.Drawing.Image.FromFile(watermarkImage))
                        {
                            //水印绘制条件：原始图片宽高均大于或等于水印图片
                            if (newImage.Width >= wrImage.Width && newImage.Height >= wrImage.Height)
                            {
                                using (Graphics gWater = Graphics.FromImage(newImage))
                                {

                                    //透明属性
                                    ImageAttributes imgAttributes = new ImageAttributes();
                                    ColorMap colorMap = new ColorMap();
                                    colorMap.OldColor = Color.FromArgb(255, 0, 255, 0);
                                    colorMap.NewColor = Color.FromArgb(0, 0, 0, 0);
                                    ColorMap[] remapTable = { colorMap };
                                    imgAttributes.SetRemapTable(remapTable, ColorAdjustType.Bitmap);

                                    float[][] colorMatrixElements =
                                    {
                                    new float[] {1.0f, 0.0f, 0.0f, 0.0f, 0.0f},
                                    new float[] {0.0f, 1.0f, 0.0f, 0.0f, 0.0f},
                                    new float[] {0.0f, 0.0f, 1.0f, 0.0f, 0.0f},
                                    new float[] {0.0f, 0.0f, 0.0f, 0.5f, 0.0f}, //透明度:0.5
                                    new float[] {0.0f, 0.0f, 0.0f, 0.0f, 1.0f}
                                };

                                    ColorMatrix wmColorMatrix = new ColorMatrix(colorMatrixElements);
                                    imgAttributes.SetColorMatrix(wmColorMatrix, ColorMatrixFlag.Default,
                                        ColorAdjustType.Bitmap);
                                    gWater.DrawImage(wrImage,
                                        new Rectangle(newImage.Width - wrImage.Width, newImage.Height - wrImage.Height,
                                            wrImage.Width, wrImage.Height), 0, 0, wrImage.Width, wrImage.Height,
                                        GraphicsUnit.Pixel, imgAttributes);
                                }
                            }
                        }
                    }
                }

                //保存缩略图
                newImage.Save(savePath, System.Drawing.Imaging.ImageFormat.Jpeg);

                //释放资源
                newG.Dispose();
                newImage.Dispose();
                initImage.Dispose();
            }
        }

        #endregion

        #region 其它

        /// <summary>
        /// 判断文件类型是否为WEB格式图片
        /// (注：JPG,GIF,BMP,PNG)
        /// </summary>
        /// <param name="contentType">HttpPostedFile.ContentType</param>
        /// <returns></returns>
        public static bool IsWebImage(string contentType)
        {
            if (contentType == "image/pjpeg" || contentType == "image/jpeg" || contentType == "image/gif" ||
                contentType == "image/bmp" || contentType == "image/png")
            {
                return true;
            }
            return false;
        }


        /// <summary>
        /// 判断文件类型是否为WEB格式图片
        /// (注：jpg,png,gif,jpeg,bmp)
        /// </summary>
        /// <param name="extension">extension</param>
        /// <returns></returns>
        public static bool IsImageType(string extension)
        {
            if (extension == ".jpg" || extension == ".png" || extension == ".gif" || extension == ".jpeg" ||
                extension == ".bmp")
            {
                return true;
            }
            else
            {
                return false;
            }
        }

        public static string SaveImageFile(HttpPostedFileBase imgFile, string tipdata)
        {
            var fileName = "";
            if (imgFile == null)
            {
                return "nophoto";
            }
            FileInfo file = new FileInfo(imgFile.FileName);
            fileName = file.Name;
            var extension = Path.GetExtension(fileName).ToLower();
            if (!FileHelper.IsImageType(extension))
            {
                return "noext";
            }
            var dirPath = System.Web.HttpContext.Current.Server.MapPath("/UploadFile/UserCompany");
            try
            {
                if (!Directory.Exists(dirPath)) //保存路径不存在，创建路径
                {
                    Directory.CreateDirectory(dirPath);
                }
                fileName = tipdata + fileName;
                string filePath = dirPath + "/" + fileName;

                imgFile.SaveAs(filePath);
            }
            catch (Exception ex)
            {
                Debug.WriteLine(ex.StackTrace);
                return "fail";
            }
            return "/UploadFile/UserCompany/" + fileName;
        }

        #endregion

        #endregion

        #region package

        /// <summary>
        /// ZIP压缩
        /// </summary>
        /// <param name="SrcFile">源文件，需要压缩的文件路径</param>
        /// <param name="DstFile">压缩文件路径</param>
        /// <param name="pkgFileName">压缩包里的压缩文件名</param>
        public static void ZipFile(string srcFile, string dstFile,string pkgFileName)
        {
            using (ZipOutputStream s = new ZipOutputStream(File.Create(dstFile)))
            {
                s.SetLevel(9);
                ZipEntry entry = new ZipEntry(pkgFileName);
                entry.DateTime = DateTime.Now;
                s.PutNextEntry(entry);
                using (FileStream fs = File.OpenRead(srcFile))
                {
                    byte[] buffer = new byte[fs.Length];
                    int sourceBytes;
                    do
                    {
                        sourceBytes = fs.Read(buffer, 0, buffer.Length);
                        s.Write(buffer, 0, sourceBytes);
                    } while (sourceBytes > 0);
                }
                s.Finish();
                s.Close();
            }
        }

        /// <summary>
        /// ZIP压缩批量文件
        /// </summary>
        /// <param name="SrcFile">源文件，需要压缩的文件路径</param>
        /// <param name="DstFile">压缩文件路径</param>
        /// <param name="pkgFileName">压缩包里的压缩文件名</param>
        public static void ZipFiles(List<string> srcFiles, string dstFile)
        {
            using (ZipOutputStream s = new ZipOutputStream(File.Create(dstFile)))
            {
                s.SetLevel(9);
                foreach(string srcfile in srcFiles)
                {
                    ZipEntry entry = new ZipEntry(Path.GetFileName(srcfile));
                    entry.DateTime = DateTime.Now;
                    s.PutNextEntry(entry);
                    using (FileStream fs = File.OpenRead(srcfile))
                    {
                        byte[] buffer = new byte[fs.Length];
                        int sourceBytes;
                        do
                        {
                            sourceBytes = fs.Read(buffer, 0, buffer.Length);
                            s.Write(buffer, 0, sourceBytes);
                        } while (sourceBytes > 0);
                    }
                }
                s.Finish();
                s.Close();
            }
        }

        //public static void UnZip(string SrcFile, string DstFile, int BufferSize)
        //{
        //    FileStream fileStreamIn = new FileStream
        //        (SrcFile, FileMode.Open, FileAccess.Read);
        //    ZipInputStream zipInStream = new ZipInputStream(fileStreamIn);
        //    ZipEntry entry = zipInStream.GetNextEntry();
        //    FileStream fileStreamOut = new FileStream
        //        (DstFile + @"\" + entry.Name, FileMode.Create, FileAccess.Write);
        //    int size;
        //    byte[] buffer = new byte[BufferSize];
        //    do
        //    {
        //        size = zipInStream.Read(buffer, 0, buffer.Length);
        //        fileStreamOut.Write(buffer, 0, size);
        //    } while (size > 0);
        //    zipInStream.Close();
        //    fileStreamOut.Close();
        //    fileStreamIn.Close();
        //}

        /// <summary>
        /// 压缩文件，使用system.IO.Package
        /// </summary>
        /// <param name="targetPath">压缩的目标文件全路径,D:/a/b.txt</param>
        /// <param name="pkgname">压缩包文件名,b.zip</param>
        /// <param name="sourceFile">压缩包里的文件名b.txt</param>
        public static void CreatePackage(String targetPath, string pkgname, string sourceFile)
        {
            string directoryName = Path.GetDirectoryName(targetPath);
            using (Package pkg = Package.Open(Path.Combine(directoryName, pkgname), FileMode.Create))
            {
                Uri partUriDocument = PackUriHelper.CreatePartUri(new Uri(sourceFile, UriKind.Relative));
                PackagePart pkgpart = pkg.CreatePart(partUriDocument, MediaTypeNames.Application.Octet, CompressionOption.Maximum);
                using (FileStream fs = File.OpenRead(targetPath))
                {
                    fs.CopyTo(pkgpart.GetStream());
                }
            }
        }





        #endregion

    }

    public enum ImageSuffixNames
    {
        Jpg,
        Png,
        Gif,
        Jpeg,
        Bmp,
    }

    /// <summary>
    ///     输出文件类型
    /// </summary>
    public enum OutFileTypes
    {
        Txt = 1,
        Xml = 2,
        Html = 3,
    }


    public class XmlData
    {
        public string Name { get; set; }

        public string Value { get; set; }

        public Dictionary<string, string> Attributes { get; set; }

        public XmlData[] ChildNode { get; set; }
    }
}